<?php
/**
 * ---------------------------------------------------------------------
 * GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2015-2018 Teclib' and contributors.
 *
 * http://glpi-project.org
 *
 * based on GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2003-2014 by the INDEPNET Development Team.
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * GLPI is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GLPI is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GLPI. If not, see <http://www.gnu.org/licenses/>.
 * ---------------------------------------------------------------------
 */

if (!defined('GLPI_ROOT')) {
   die("Sorry. You can't access this file directly");
}

/**
 * CommonITILCost Class
 *
 * @since 0.85
**/
abstract class CommonITILCost extends CommonDBChild {

   public $dohistory        = true;


   static function getTypeName($nb = 0) {
      return _n('Cost', 'Costs', $nb);
   }


   function getItilObjectItemType() {
      return str_replace('Cost', '', $this->getType());
   }


   /**
    * @see CommonGLPI::getTabNameForItem()
   **/
   function getTabNameForItem(CommonGLPI $item, $withtemplate = 0) {

      // can exists for template
      if (($item->getType() == static::$itemtype)
          && static::canView()) {
         $nb = 0;
         if ($_SESSION['glpishow_count_on_tabs']) {
            $nb = countElementsInTable($this->getTable(),
                                       [$item->getForeignKeyField() => $item->getID()]);
         }
         return self::createTabEntry(self::getTypeName(Session::getPluralNumber()), $nb);
      }
      return '';
   }


   /**
    * @param $item            CommonGLPI object
    * @param $tabnum          (default 1)
    * @param $withtemplate    (default 0)
   **/
   static function displayTabContentForItem(CommonGLPI $item, $tabnum = 1, $withtemplate = 0) {

      self::showForObject($item, $withtemplate);
      return true;
   }


   function rawSearchOptions() {
      $tab = [];

      $tab[] = [
         'id'                 => 'common',
         'name'               => __('Characteristics')
      ];

      $tab[] = [
         'id'                 => '1',
         'table'              => $this->getTable(),
         'field'              => 'name',
         'name'               => __('Title'),
         'searchtype'         => 'contains',
         'datatype'           => 'itemlink',
         'massiveaction'      => false
      ];

      $tab[] = [
         'id'                 => '2',
         'table'              => $this->getTable(),
         'field'              => 'id',
         'name'               => __('ID'),
         'massiveaction'      => false,
         'datatype'           => 'number'
      ];

      $tab[] = [
         'id'                 => '16',
         'table'              => $this->getTable(),
         'field'              => 'comment',
         'name'               => __('Comments'),
         'datatype'           => 'text'
      ];

      $tab[] = [
         'id'                 => '12',
         'table'              => $this->getTable(),
         'field'              => 'begin_date',
         'name'               => __('Begin date'),
         'datatype'           => 'datetime'
      ];

      $tab[] = [
         'id'                 => '10',
         'table'              => $this->getTable(),
         'field'              => 'end_date',
         'name'               => __('End date'),
         'datatype'           => 'datetime'
      ];

      $tab[] = [
         'id'                 => '11',
         'table'              => $this->getTable(),
         'field'              => 'actiontime',
         'name'               => __('Duration'),
         'datatype'           => 'timestamp'
      ];

      $tab[] = [
         'id'                 => '14',
         'table'              => $this->getTable(),
         'field'              => 'cost_time',
         'name'               => __('Time cost'),
         'datatype'           => 'decimal'
      ];

      $tab[] = [
         'id'                 => '15',
         'table'              => $this->getTable(),
         'field'              => 'cost_fixed',
         'name'               => __('Fixed cost'),
         'datatype'           => 'decimal'
      ];

      $tab[] = [
         'id'                 => '19',
         'table'              => $this->getTable(),
         'field'              => 'cost_material',
         'name'               => __('Material cost'),
         'datatype'           => 'decimal'
      ];

      $tab[] = [
         'id'                 => '18',
         'table'              => 'glpi_budgets',
         'field'              => 'name',
         'name'               => _n('Budget', 'Budgets', 1),
         'datatype'           => 'dropdown'
      ];

      $tab[] = [
         'id'                 => '80',
         'table'              => 'glpi_entities',
         'field'              => 'completename',
         'name'               => __('Entity'),
         'massiveaction'      => false,
         'datatype'           => 'dropdown'
      ];

      return $tab;
   }


   static function rawSearchOptionsToAdd() {
      $tab = [];

      $tab[] = [
         'id'                 => 'cost',
         'name'               => __('Cost')
      ];

      $tab[] = [
         'id'                 => '48',
         'table'              => static::getTable(),
         'field'              => 'totalcost',
         'name'               => __('Total cost'),
         'datatype'           => 'decimal',
         'forcegroupby'       => true,
         'usehaving'          => true,
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'child'
         ],
         'computation'        => '(SUM(TABLE.`actiontime`
                                         * TABLE.`cost_time`/'.HOUR_TIMESTAMP.'
                                         + TABLE.`cost_fixed`
                                         + TABLE.`cost_material`)
                                     / COUNT(TABLE.`id`))
                                   * COUNT(DISTINCT TABLE.`id`)'
      ];

      $tab[] = [
         'id'                 => '42',
         'table'              => static::getTable(),
         'field'              => 'cost_time',
         'name'               => __('Time cost'),
         'datatype'           => 'decimal',
         'forcegroupby'       => true,
         'usehaving'          => true,
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'child'
         ],
         'computation'        => '(SUM(TABLE.`cost_time`*TABLE.`actiontime`/'.HOUR_TIMESTAMP.')
                                      / COUNT(TABLE.`id`))
                                    * COUNT(DISTINCT TABLE.`id`)'
      ];

      $tab[] = [
         'id'                 => '49',
         'table'              => static::getTable(),
         'field'              => 'actiontime',
         'name'               => sprintf(__('%1$s - %2$s'), __('Cost'), __('Duration')),
         'datatype'           => 'timestamp',
         'forcegroupby'       => true,
         'usehaving'          => true,
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'child'
         ]
      ];

      $tab[] = [
         'id'                 => '43',
         'table'              => static::getTable(),
         'field'              => 'cost_fixed',
         'name'               => __('Fixed cost'),
         'datatype'           => 'decimal',
         'forcegroupby'       => true,
         'usehaving'          => true,
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'child'
         ],
         'computation'        => '(SUM(TABLE.`cost_fixed`) / COUNT(TABLE.`id`))
                                    * COUNT(DISTINCT TABLE.`id`)'
      ];

      $tab[] = [
         'id'                 => '44',
         'table'              => static::getTable(),
         'field'              => 'cost_material',
         'name'               => __('Material cost'),
         'datatype'           => 'decimal',
         'forcegroupby'       => true,
         'usehaving'          => true,
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'child'
         ],
         'computation'        => '(SUM(TABLE.`cost_material`) / COUNT(TABLE.`id`))
                                    * COUNT(DISTINCT TABLE.`id`)'
      ];

      return $tab;
   }


   /**
    * Init cost for creation based on previous cost
   **/
   function initBasedOnPrevious() {

      $item = new static::$itemtype();
      if (!isset($this->fields[static::$items_id])
          || !$item->getFromDB($this->fields[static::$items_id])) {
         return false;
      }

      // Set actiontime to
      $this->fields['actiontime']
                    = max(0,
                          $item->fields['actiontime']
                              - $this->getTotalActionTimeForItem($this->fields[static::$items_id]));
      $lastdata     = $this->getLastCostForItem($this->fields[static::$items_id]);

      if (isset($lastdata['end_date'])) {
         $this->fields['begin_date'] = $lastdata['end_date'];
      }
      if (isset($lastdata['cost_time'])) {
         $this->fields['cost_time'] = $lastdata['cost_time'];
      }
      if (isset($lastdata['cost_fixed'])) {
         $this->fields['cost_fixed'] = $lastdata['cost_fixed'];
      }
      if (isset($lastdata['budgets_id'])) {
         $this->fields['budgets_id'] = $lastdata['budgets_id'];
      }
      if (isset($lastdata['name'])) {
         $this->fields['name'] = $lastdata['name'];
      }
   }


   /**
    * Get total actiNULL        11400   0.0000  0.0000  0.0000  on time used on costs for an item
    *
    * @param $items_id        integer  ID of the item
   **/
   function getTotalActionTimeForItem($items_id) {
      global $DB;

      $result = $DB->request([
         'SELECT' => ['SUM' => 'actiontime AS sumtime'],
         'FROM'   => $this->getTable(),
         'WHERE'  => [static::$items_id => $items_id]
      ])->next();
      return $result['sumtime'];
   }


   /**
    * Get last datas for an item
    *
    * @param $items_id        integer  ID of the item
   **/
   function getLastCostForItem($items_id) {
      global $DB;

      $result = $DB->request([
         'FROM'   => $this->getTable(),
         'WHERE'  => [
            static::$items_id => $items_id
         ],
         'ORDER'  => [
            'end_date DESC',
            'id DESC'
         ]
      ])->next();
      return $result;
   }


   /**
    * Print the item cost form
    *
    * @param $ID        integer  ID of the item
    * @param $options   array    options used
   **/
   function showForm($ID, $options = []) {

      if (isset($options['parent']) && !empty($options['parent'])) {
         $item = $options['parent'];
      }

      if ($ID > 0) {
         $this->check($ID, READ);
      } else {
         // Create item
         $options[static::$items_id] = $item->getField('id');
         $this->check(-1, CREATE, $options);
         $this->initBasedOnPrevious();
      }

      if ($ID > 0) {
         $items_id = $this->fields[static::$items_id];
      } else {
         $items_id = $options['parent']->fields["id"];
      }

      $item = new static::$itemtype();
      if (!$item->getFromDB($items_id)) {
         return false;
      }

      $this->showFormHeader($options);
      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Name')."</td>";
      echo "<td>";
      echo "<input type='hidden' name='".static::$items_id."' value='".$item->fields['id']."'>";

      Html::autocompletionTextField($this, 'name');
      echo "</td>";
      echo "<td>".__('Begin date')."</td>";
      echo "<td>";
      Html::showDateField("begin_date", ['value' => $this->fields['begin_date']]);
      echo "</td>";
      echo "</tr>";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Duration')."</td>";
      echo "<td>";
      Dropdown::showTimeStamp('actiontime', ['value'           => $this->fields['actiontime'],
                                                  'addfirstminutes' => true]);
      echo "</td>";
      echo "<td>".__('End date')."</td>";
      echo "<td>";
      Html::showDateField("end_date", ['value' => $this->fields['end_date']]);
      echo "</td>";
      echo "</tr>";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Time cost')."</td><td>";
      echo "<input type='text' size='15' name='cost_time' value='".
             Html::formatNumber($this->fields["cost_time"], true)."'>";
      echo "</td>";
      $rowspan = 4;
      echo "<td rowspan='$rowspan'>".__('Comments')."</td>";
      echo "<td rowspan='$rowspan' class='middle'>";
      echo "<textarea cols='45' rows='".($rowspan+3)."' name='comment' >".$this->fields["comment"].
           "</textarea>";
      echo "</td></tr>\n";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Fixed cost')."</td><td>";
      echo "<input type='text' size='15' name='cost_fixed' value='".
             Html::formatNumber($this->fields["cost_fixed"], true)."'>";
      echo "</td>";
      echo "</tr>";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Material cost')."</td><td>";
      echo "<input type='text' size='15' name='cost_material' value='".
             Html::formatNumber($this->fields["cost_material"], true)."'>";
      echo "</td>";
      echo "</tr>";

      echo "<tr class='tab_bg_1'><td>".__('Budget')."</td>";
      echo "<td>";
      Budget::dropdown(['value'  => $this->fields["budgets_id"],
                             'entity' => $this->fields["entities_id"]]);
      echo "</td></tr>";

      $this->showFormButtons($options);

      return true;
   }


   /**
    * Print the item costs
    *
    * @param $item                  CommonITILObject object or Project
    * @param $withtemplate boolean  Template or basic item (default 0)
    *
    * @return number total cost
   **/
   static function showForObject($item, $withtemplate = 0) {
      global $DB, $CFG_GLPI;

      $forproject = false;
      if (is_a($item, 'Project', true)) {
         $forproject = true;
      }

      $ID = $item->fields['id'];

      if (!$item->getFromDB($ID)
          || !$item->canViewItem()
          || !static::canView()) {
         return false;
      }
      $canedit = false;
      if (!$forproject) {
         $canedit = $item->canAddItem(__CLASS__);
      }

      echo "<div class='center'>";

      $items_ids = $ID;
      if ($forproject) {
         $alltickets = ProjectTask::getAllTicketsForProject($ID);
         $items_ids = (count($alltickets) ? $alltickets : 0);
      }
      $iterator = $DB->request([
         'FROM'   => static::getTable(),
         'WHERE'  => [
            static::$items_id   => $items_ids
         ],
         'ORDER'  => 'begin_date'
      ]);

      $rand   = mt_rand();

      if ($canedit) {
         echo "<div id='viewcost".$ID."_$rand'></div>\n";
         echo "<script type='text/javascript' >\n";
         echo "function viewAddCost".$ID."_$rand() {\n";
         $params = ['type'             => static::getType(),
                         'parenttype'       => static::$itemtype,
                         static::$items_id  => $ID,
                         'id'               => -1];
         Ajax::updateItemJsCode("viewcost".$ID."_$rand",
                                $CFG_GLPI["root_doc"]."/ajax/viewsubitem.php", $params);
         echo "};";
         echo "</script>\n";
         if (static::canCreate()) {
            echo "<div class='center firstbloc'>".
                   "<a class='vsubmit' href='javascript:viewAddCost".$ID."_$rand();'>";
            echo __('Add a new cost')."</a></div>\n";
         }
      }

      $total          = 0;
      $total_time     = 0;
      $total_costtime = 0;
      $total_fixed    = 0;
      $total_material = 0;

      echo "<table class='tab_cadre_fixehov'>";
      echo "<tr class='noHover'>";
      if ($forproject) {
         echo "<th colspan='10'>"._n('Ticket cost', 'Ticket costs', count($iterator))."</th>";
      } else {
         echo "<th colspan='7'>".self::getTypeName(count($iterator))."</th>";
         echo "<th>".__('Item duration')."</th>";
         echo "<th>".CommonITILObject::getActionTime($item->fields['actiontime'])."</th>";
      }
      echo "</tr>";

      if (count($iterator)) {
         echo "<tr>";
         if ($forproject) {
            echo "<th>".__('Ticket')."</th>";
            $ticket = new Ticket();
         }
         echo "<th>".__('Name')."</th>";
         echo "<th>".__('Begin date')."</th>";
         echo "<th>".__('End date')."</th>";
         echo "<th>".__('Budget')."</th>";
         echo "<th>".__('Duration')."</th>";
         echo "<th>".__('Time cost')."</th>";
         echo "<th>".__('Fixed cost')."</th>";
         echo "<th>".__('Material cost')."</th>";
         echo "<th>".__('Total cost')."</th>";
         echo "</tr>";

         Session::initNavigateListItems(static::getType(),
                           //TRANS : %1$s is the itemtype name,
                           //        %2$s is the name of the item (used for headings of a list)
                                          sprintf(__('%1$s = %2$s'),
                                                $item->getTypeName(1), $item->getName()));

         while ($data = $iterator->next()) {
            echo "<tr class='tab_bg_2' ".
                     ($canedit
                     ? "style='cursor:pointer' onClick=\"viewEditCost".$data[static::$items_id]."_".
                        $data['id']."_$rand();\"": '') .">";
            $name = (empty($data['name'])? sprintf(__('%1$s (%2$s)'),
                                                   $data['name'], $data['id'])
                                          : $data['name']);

            if ($forproject) {
               $ticket->getFromDB($data['tickets_id']);
               echo "<td>".$ticket->getLink()."</td>";
            }
            echo "<td>";
            printf(__('%1$s %2$s'), $name,
                     Html::showToolTip($data['comment'], ['display' => false]));
            if ($canedit) {
               echo "\n<script type='text/javascript' >\n";
               echo "function viewEditCost" .$data[static::$items_id]."_". $data["id"]. "_$rand() {\n";
               $params = ['type'            => static::getType(),
                              'parenttype'       => static::$itemtype,
                              static::$items_id  => $data[static::$items_id],
                              'id'               => $data["id"]];
               Ajax::updateItemJsCode("viewcost".$ID."_$rand",
                                       $CFG_GLPI["root_doc"]."/ajax/viewsubitem.php", $params);
               echo "};";
               echo "</script>\n";
            }
            echo "</td>";
            echo "<td>".Html::convDate($data['begin_date'])."</td>";
            echo "<td>".Html::convDate($data['end_date'])."</td>";
            echo "<td>".Dropdown::getDropdownName('glpi_budgets', $data['budgets_id'])."</td>";
            echo "<td>".CommonITILObject::getActionTime($data['actiontime'])."</td>";
            $total_time += $data['actiontime'];
            echo "<td class='numeric'>".Html::formatNumber($data['cost_time'])."</td>";
            $total_costtime += ($data['actiontime']*$data['cost_time']/HOUR_TIMESTAMP);
            echo "<td class='numeric'>".Html::formatNumber($data['cost_fixed'])."</td>";
            $total_fixed += $data['cost_fixed'];
            echo "<td class='numeric'>".Html::formatNumber($data['cost_material'])."</td>";
            $total_material += $data['cost_material'];
            $cost            = self::computeTotalCost($data['actiontime'], $data['cost_time'],
                                                      $data['cost_fixed'], $data['cost_material']);
            echo "<td class='numeric'>".Html::formatNumber($cost)."</td>";
            $total += $cost;
            echo "</tr>";
            Session::addToNavigateListItems(static::getType(), $data['id']);
         }
         $colspan = 4;
         if ($forproject) {
            $colspan++;
         }
         echo "<tr class='b noHover'><td colspan='$colspan' class='right'>".__('Total').'</td>';
         echo "<td>".CommonITILObject::getActionTime($total_time)."</td>";
         echo "<td class='numeric'>".Html::formatNumber($total_costtime)."</td>";
         echo "<td class='numeric'>".Html::formatNumber($total_fixed).'</td>';
         echo "<td class='numeric'>".Html::formatNumber($total_material).'</td>';
         echo "<td class='numeric'>".Html::formatNumber($total).'</td></tr>';
      } else {
         echo "<tr><th colspan='9'>".__('No item found')."</th></tr>";
      }
      echo "</table>";
      echo "</div><br>";
      return $total;
   }


   /**
    * Get costs summary values
    *
    * @param $type    string  type
    * @param $ID      integer ID of the ticket
    *
    * @return array of costs and actiontime
   **/
   static function getCostsSummary($type, $ID) {
      global $DB;

      $result = $DB->request(
         [
            'FROM'      => getTableForItemtype($type),
            'WHERE'     => [
               static::$items_id      => $ID,
            ],
            'ORDER'     => [
               'begin_date'
            ],
         ]
      );

      $tab = ['totalcost'   => 0,
                  'actiontime'   => 0,
                  'costfixed'    => 0,
                  'costtime'     => 0,
                  'costmaterial' => 0
             ];

      foreach ($result as $data) {
         $tab['actiontime']   += $data['actiontime'];
         $tab['costfixed']    += $data['cost_fixed'];
         $tab['costmaterial'] += $data['cost_material'];
         $tab['costtime']     += ($data['actiontime']*$data['cost_time']/HOUR_TIMESTAMP);
         $tab['totalcost']    +=  self::computeTotalCost($data['actiontime'], $data['cost_time'],
                                                         $data['cost_fixed'], $data['cost_material']);
      }
      foreach ($tab as $key => $val) {
         $tab[$key] = Html::formatNumber($val);
      }
      return $tab;
   }


   /**
    * Computer total cost of a item
    *
    * @param $actiontime      float    actiontime
    * @param $cost_time       float    time cost
    * @param $cost_fixed      float    fixed cost
    * @param $cost_material   float    material cost
    * @param $edit            boolean  used for edit of computation ? (true by default)
    *
    * @return string total cost formatted string
   **/
   static function computeTotalCost($actiontime, $cost_time, $cost_fixed, $cost_material,
                                     $edit = true) {

      return Html::formatNumber(($actiontime*$cost_time/HOUR_TIMESTAMP)+$cost_fixed+$cost_material,
                                $edit);
   }

}
